19U5.] 107 



clouding is much more intense than in others) ; tlien comes a rather broad paler 

 stripe, then a series of alternate narrow dark and pale stripes or lines until the 

 spiracular stripe is reached ; this is rather broad and grey, and the black spiracles 

 are seated on its lower edge ; next comes a rather broad and conspicuous oclu'cous- 

 white stripe, which, in some individuals, is tinged with pink ; under surface paler 

 than the upper and irrorated with some minute dots of a darker shade ; legs 

 brown; a few minute pale bristles, those on the head the longest ; length, 20 mm. 

 This description was taken from one of a batch of larva; from eggs laid by a female 

 of the red variety. 



April I'St/i. — Full groion larva. Length, nearly 40 mm.; cylindrical, rather 

 stout and plump ; head pale, shining, yellowish-brown, thickly reticulated with 

 darker dots, and with a crescent-shaped streak on each lobe ; general colour a warm 

 putty colour, or pinkish-brown, mottled and clouded with darker shades ; dorsal 

 line pale and whitish-brown, most conspicuous on the first three segments, and 

 bordered on each side by a darker shade ; a subdorsal line of the same colour, but 

 rather brighter, and bordered above by a dai'k shade and below by a narrow dark 

 line ; a conspicuous brown or pinkish-brown stripe above the spiracles, and below 

 them a rather conspicuous pinkish-yellow-stripe ; spiracles small and black, with a 

 pale centre and planted in a narrow pale ring ; two minute dark dots on each seg- 

 ment between dorsal and subdorsal lines; spiracles on second segment much the 

 largest ; under parts paler. The whole surface of the larva is delicately reticulated 

 with darker shadings, and they also vary considerably in their colour and depth of 

 mai'kings, but the general tone of colour is always more or less of a warm pinkish- 

 brown. This description was taken from several larvae of the typical batch. 



April iSth. — Full grown larva. Length, 40 mm. ; cylindrical, rather plump, 

 and tapering somewhat towards each extremity ; head porrected, rather flattened, 

 greyish-ochreous, reticulated with darker atoms, and with a lunular-shaped stripe 

 on each lobe ; general colour pinkish-ochreous, reticulated with darker markings ; 

 dorsal line pale and narrow, and clouded on each side with dark brown reticulations ; 

 subdorsal line greyish-white, and bordered above by a darker shade ; above the 

 spiracles a bi'oader stripe formed of the darker reticulations ; the spiracles, which 

 are small and greyish-white, are edged with black, which is again edged with a pale 

 ring, and they are seated on the lower margin of the above broad stripe ; the 

 spiracle on the second segment is twice the size of the others, while those on the 

 third and fourth segments are very small ; below the spiracles there is a broad stripe 

 of pale pinkish-ochreous ; under surface pinkish-ochreous ; a few minute bristles on 

 the head and anal segments. The whole of the markings are caused, more or less, 

 by the arrangement of the reticulations. This description was taken from one of a 

 batch of larvae from eggs laid by a dark female ab. argillacea, Tutt. 



lu July, 1903, I sent two batches of eggs of L.favicolor, laid by 

 different females, to Mr. A. W. Bacot, and in July, 190J<, I sent him 

 a dead pupa, and he has very kindly furnished me with his notes on the 

 ova, larva, and pupa ; and also with notes on the ova and young larvae 

 of L. pallens, with permission to make use of them in this paper, and 

 I think the best way of doing so will be to give his descriptions in 

 his own words. 



